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Q. A 1300kg sports car accelerates from rest to 80km/h in 7.4s. What is the average power delivered by engine?

Q. The supersonic aircraft Concorde has a length of 63 when sitting on the ground on a typical day when the temperature is 13.00. The Concorde is primarily made of aluminium. In flight at twice speed of sound, friction with the air warms the Concorde's skin and causes the aircraft to lengthen by 21.

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